Messgenauigkeit eines akzelerometerbasierten Multisensorgeräts zur Energieumsatz­bestimmung bei normal-, übergewichtigen und adipösen Personen^[*]

Zusammenfassung

Die Untersuchung überprüft die Genauigkeit der Energieumsatzermittlung des SenseWear Pro 3 Armbands (SW3) bei normalgewichtigen, übergewichtigen und adipösen Personen höheren Alters mittels Spirometrie. Insgesamt absolvierten 50 Personen im Alter von 60–82 Jahren 5 standardisierte Aktivitäten (Sitzen, Gehen, Staubsaugen, Radfahren, Treppensteigen), die mithilfe der Spirometrie Metamax 3b (MM3b) und SW3 erfasst wurden. Es zeigte sich, dass die Werte des SW3 bei allen Aktivitäten signifikant unterhalb denen des MM3b lagen. Die Unterschiede wurden mit zunehmender Intensität und steigendem BMI größer. Der Intraklassen-Korrelations­koeffizient (ICC) bestätigte die schwache Übereinstimmung bei 3 der 5 Aktivitäten (Sitzen, Radfahren und Treppensteigen). Bei der zukünftigen Verwendung des SW3 sollte berücksichtigt werden, dass sowohl der BMI als auch die Kontexterkennung von niedrig intensiven Alltagsaktivitäten einen Einfluss auf die Messpräzision zu haben scheinen.

Abstract

The study investigates the accurate determination of energy expenditure of SenseWear Pro 3 armband (SW3) in normal weight, overweight and obese older people in comparison to spirometry. A total of 50 people between 60 and 82 years of age completed 5 standardized activities (sitting, walking, vacuuming, cycling, stair stepping), which were assessed by spirometry Metamax 3b (MM3b) and SW3. Apparently the SW3 values were significantly lower than those of MM3b in all the 5 activities. The differences became bigger with increasing level of intensity and rising BMI. The intra-class correlation coefficient (ICC) confirmed the poor agreement in 3 out of the 5 activities (sitting, cycling and stair stepping). When using the SW3 in the future it should be considered that both BMI and context recognition of low intense daily routine activities seem to have an impact on measurement ­accuracy.

Schlüsselwörter

Energieumsatz - Akzelerometrie - körperliche Aktivität - Übergewicht - SenseWear

Key words

energy expenditure - accelerometry - physical activity - overweight - SenseWear

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